MAP Sensor

Mountain Main · 07-06-2003, 07:41 PM

What year Ford's Vehicles can I take a Map Sensor out of? I have replaced this sensor two times and it is a hundred and forty dollars a pop from the ford dealership. I am sick of it.

I think I was blowing them up when I hooked the Neutral Safety Swith up with 12 volts. I want to go to the junk yard and save some dollar bills.

Thankx

Mountain Main

P.S. New Digital Multimeter from Snap On coming in tommorrow. Yeah!

PKRWUD · 07-06-2003, 07:59 PM

Okay, what are you talking about? You lost me. Did you put a manual tranny ECM in an automatic tranny car, and not cut pin 30?

How did you determine that you "blew out" two BP sensors?

Mountain Main · 07-06-2003, 08:56 PM

I went from a AOD to a t-5. I originally hooked up the switch that is on the clutch with 12 volts. I took it to a speacialty shop and then I believe they hooked the clutch switch with 5 volts and then installed a new MAP and the computer. I drove it back two weeks later and helped install a manual transmission harness that goes to the cruise controll box. But I think when they were diagnosing the problem they installed the MAP sensor before they did the MOD's.

This has been very expensive I had to live and learn.

Mountain Main · 07-06-2003, 10:50 PM

We tested the Map and PKERWUD thought it was bad.

Old Guy with 87 GT · 07-07-2003, 03:43 AM

ok ...i'm lost now .....i would think that the map(or bap) would be wired the same on either harness (auto or man)....as long as the harness is still for a mass air car(i'm not positive thuogh) .......if it goes bad on a mass air ecu ,it shouldn't effect a whole lot other then start up .........?

as for the nuetral safty switch ,i'm not familiar with the wiring schematics at all .....i would think that the safty switch circiuts would be seperate from the ecu's engine controls .......

just for the sake of curiosity ,keep me updated on what you find out

tmoss · 07-07-2003, 12:52 PM

Here is a diagram of the 88-91 EEC pinout. The clutch switch does get 12v and the neutral switch tells the EEC when the trans is in nuetral for a T5 so that it will give codes.

Mountain Main · 07-07-2003, 03:35 PM

I think I need to check the wiring for the MAP/BP? I just got my new DMM in and I am looking forward to using it. The DMM has a Data hold, bonus! The MAP/BP is only a year old. If it is the MAP/BP why would they be failing. VREF?

Thankx

Mountain Main

Mountain Main · 07-08-2003, 06:25 AM

I have a question on how the MAP and how the Oxygen sensor enter acts with each other? Will an oxygen sensor ground throw a Map sensor Code? They are obviously not on the same wiring diagram circuit. What cruise strategies do both of these take?

Thanks

Mountain Main

tmoss · 07-08-2003, 07:02 AM

The MAP and O2 sensors only have the EEC as a common point and the EEC only reads each as an input. I doubt a grounded O2 would throw a MAP code.

07-06-2003, 07:41 PM	#1
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	MAP Sensor What year Ford's Vehicles can I take a Map Sensor out of? I have replaced this sensor two times and it is a hundred and forty dollars a pop from the ford dealership. I am sick of it. I think I was blowing them up when I hooked the Neutral Safety Swith up with 12 volts. I want to go to the junk yard and save some dollar bills. Thankx Mountain Main P.S. New Digital Multimeter from Snap On coming in tommorrow. Yeah!

07-06-2003, 07:59 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Okay, what are you talking about? You lost me. Did you put a manual tranny ECM in an automatic tranny car, and not cut pin 30? How did you determine that you "blew out" two BP sensors? __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

07-06-2003, 08:56 PM	#3
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	Manual Transmission wiring harness I went from a AOD to a t-5. I originally hooked up the switch that is on the clutch with 12 volts. I took it to a speacialty shop and then I believe they hooked the clutch switch with 5 volts and then installed a new MAP and the computer. I drove it back two weeks later and helped install a manual transmission harness that goes to the cruise controll box. But I think when they were diagnosing the problem they installed the MAP sensor before they did the MOD's. This has been very expensive I had to live and learn.

07-06-2003, 10:50 PM	#4
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	P.S. We tested the Map and PKERWUD thought it was bad.

07-07-2003, 03:43 AM	#5
Old Guy with 87 GT Registered Member Join Date: May 2001 Location: Harrisburg, Pennsylvania Posts: 379	ok ...i'm lost now .....i would think that the map(or bap) would be wired the same on either harness (auto or man)....as long as the harness is still for a mass air car(i'm not positive thuogh) .......if it goes bad on a mass air ecu ,it shouldn't effect a whole lot other then start up .........? as for the nuetral safty switch ,i'm not familiar with the wiring schematics at all .....i would think that the safty switch circiuts would be seperate from the ecu's engine controls ....... just for the sake of curiosity ,keep me updated on what you find out __________________ the "not so old",old guy 87 Mustang GT T-top >hanlon t-5, pro 5.0, centerforce clutch ,adj. cable/quatrant ,3.27s ,full 2 1/2 ex(off road H) adj. reg. ,e-cam ,70mm TB, cobra intake ,1.7rr ,ported/milled e7ets w/crane springs ,306 balaced/decked short block w/speed pro forged flat top pistons ...257rwhp/302rwt best et 13.7@102 (4/11 ) '80 Capri (future project,currently collecting parts for 351 moter)

07-07-2003, 03:35 PM	#7
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	May be I think I need to check the wiring for the MAP/BP? I just got my new DMM in and I am looking forward to using it. The DMM has a Data hold, bonus! The MAP/BP is only a year old. If it is the MAP/BP why would they be failing. VREF? Thankx Mountain Main

07-08-2003, 06:25 AM	#8
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	Can any one explain? I have a question on how the MAP and how the Oxygen sensor enter acts with each other? Will an oxygen sensor ground throw a Map sensor Code? They are obviously not on the same wiring diagram circuit. What cruise strategies do both of these take? Thanks Mountain Main

07-08-2003, 07:02 AM	#9
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	The MAP and O2 sensors only have the EEC as a common point and the EEC only reads each as an input. I doubt a grounded O2 would throw a MAP code. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
I got a free mass air sensor	stevstum	Windsor Power	2	05-27-2003 12:50 PM
Whats the best way to tell if your running lean or rich?	K.C. 5.0	Windsor Power	9	09-10-2001 03:04 PM
Sensor on Top of T5?	Green92LX	Windsor Power	13	07-29-2001 10:11 PM
Temp sensor question	RB92GT	Windsor Power	2	06-23-2001 12:23 PM
coolant temp sensor	HKstang	Windsor Power	3	04-14-2001 01:34 AM